4k epic illustration of happy rusty robot bartender wearing hat and moustache in post apocalyptic pub, with dramatic lighting and vivid colors, in the style trending on artstation, insanely detailed and intricate, high contrast, perfect composition, by jakub dvorsk, machinarium, samorost, closeup, wide low angle, wires and pipes on the walls, steam clouds on the ground behind, piles of litter and trash on the background, scratches, oil stains